Do standardized test scores predict college success better than high school grades?
Core argument: Students entering Ivy-Plus colleges with a perfect 4.0 scaled high school GPA achieve a cumulative college GPA less than 0.1 points higher than students with a 3.2 high school GPA, indicating high school GPA does little to predict college academic success.
We use admissions records and first-year college grades from multiple Ivy-Plus colleges for students between 2017 and 2022 to study how standardized test scores and high school grade point average relate to academic success in college. Even among otherwise similar students with the same high school grades, we find that SAT and ACT scores have substantial predictive power for academic success in college. Students with a perfect (scaled) high school GPA of 4.0 achieve a cumulative GPA in college that is less than 0.1 points higher than a student with a 3.2 high school GPA, indicating high school GPA does little to predict academic success in college. We compare college success outcomes (first-year college GPA) of students from less advantaged vs. more advantaged high schools and find that conditional on SAT/ACT scores, there is no evidence that students from higher-resourced backgrounds outperform students from lower-resourced backgrounds – their college GPAs are virtually identical.


